Fatah issued a statement yesterday, calling on Palestinian Arabs to defend the Al Aqsa Mosque and surrounding area against "attacks and the successive incursions, the latest of which was this morning with the Israeli police chief, accompanied by a number of settlers who wreak havoc in the holy sites."
Member of the Revolutionary Council of Fatah Osama al-Qawasmi asked, "Where the Arab and Islamic nations concerning these crimes against the first Qibla and the third holiest mosques, and against the Prophet of Islam, peace be upon him? ...These crimes and violations are a prelude to Netanyahu's visit to al-Aqsa which will explode the situation completely."
The specific incident that upset them so was an apparent visit to the Dome of the Rock by IDF veterans who had captured the Temple Mount in 1967. Here's video of them walking through the site very quickly, upsetting a single shouting woman for twenty seconds asking why they have to be there.